I have a problem with the shot from my player active. The shot goes through the background object "sometimes".

Works fine if i change position and try again, background object defined as obsticle but within a scrolling screen which is needed for the game.

The background in question is one pixel high set in the centre uncropped.

Would i be better off using a active object instead?

players movement works fine i.e. bounces off obsticle

Any ideas or help??

thanks for taking the time to read this request.

I do not know your code, but if you are using "collides with backdrop" use "overlapping backdrop" instead.

Marv

it does not make any difference if i change to overlapping a backdrop same thing shot goes through the background.
maybe i need to check for collision within a fastloop??

This happens sometimes with scrolling movement. Yes, you should try checking for collisions with fastloops.

stephen1980